Machine for sanding moldings



June 25, 1929. c. w. DUBEN I HACHINE FOR SANDING MOLDINGS Filed Feb. 15, 1926 3 Sheets-Sheet 1 S/WUWO %a otiv June 25, 1929. c w DUBEN l,7l8.78l

MACHINE FOR SANDING MOLDINGS Filed Feb. 15, 1926 3 Sheets-Sheet r afat/m- &KM/ a,

Patented June 25, 1929. i y

UNITED STATES PATENT OFFICE.

CHAELES w. DUBEN, OF MANITOWOC, WISCONSIN.

MACHINE FOR SANDING MOLDINGS.

Application filed February 15., 1926. Serial No. 88,317.

This invention relates to sanding machines wardly and rearwardly. The position of the 50 and is particularly directed to a machine for table is controlled by means of the wide cams sanding molding. which are mounted upon parallel shafts 6.

Objects of this invention are to provide a These sha'tts carry worm wheels Twhich mesh 5 machine which will automatically sand moldwith worns 8 carried by the hand wheel shaft ing or other strips of unusual sh ape in a rapid 9. The h an d wheel shaft extends through the 5 and efl'ective manner, and which will feed the body of the machine and is provided with a strips through the machine without requiring manipulating hand wheel 10 at its outer end. any attention from the operator so that each The table carries a sub-base 11 which is 10 portion of the strip is thoroughly sanded. bolted thereto as shown in Figures 1 and 2 Furth-er objects are to provide a sanding and the sub-base is provided with an npright 60 machine in which a reciprocatory shoe is prostandard 12 on opposite sides and on each end. vided with a yelding bottom portion con- These standards carry between them the toured to fit the molding and in whichclamplmurled or fiuted feeding rollers 13 which 15 ing means are provided for holding the sand are mounted upon the shafts 14. These roll paper wrapped about the yielding portion ers engage the under side of the molding or e of the shoe. i other strip 15. The upper side of the nold- Fur-ther objects areto provide a sending ing is engaged by the resilient rollers 16.

machine in which the :feeding and supporting These rollers are preferably made of a yieldmechanisn is carried by a table and driven ing material such as rubber, 'or instance, to

'from or cperatively connected to the reciproprevent damaging the finished side of the eatory mechanism, and to provide supports molding. They are adjustably carried by the for the table which will lower the table and standards 12' as shown in Figure 1 so that to permit changing of shoes or supports withthe exact pressure desired may be had by suit- 5 out requiring any alteration of the operative ably turning the adjusting screws 17 such connection between the reciprocatory means screws controllng the position olithe bearand the 'feeding means. in s for the ends of the shafts of the roll ers 16. Embodments of the mventon are shown m Between the standards 12, a molding guide the accompanyng drawnzs, 111 which 18 s positoned and is bolted to the sub-base 0 Figure lis avertical sectional view through 11 as shown in. Figures 1 and 2. This guide 'the machine, such. View corresponding to a as may be seen from Figure 3 is channelled o section in the line 1--1 of Figure& to con'torn to the contour of the 'olding.

Figure 2 is a transverse sectional view cor- Referring to Figures 1 and 3, it will be responding to a section -on the line 2-2 of seen. that a pair of inwardly curved uprights 5 FigureB. 19 are positioned upon opposite sides ofthe Fgure 3 is a transverse vertical sectional mechanisn which has been described so that 35 view on the line 3-3 of Figure 1. they form an areh over such mechanism.

Fignre l is a View of a modified `form of Their npper ends are spaced apart and rereciprocatory head. ceive the slidinghead 20 and the reoiprocatory 40 e e Figurc 5 is a sectional view onthe line 5-5 shanls: 21 of the shoe. This head is provided of Figure 4:. p with bottom 'lianges 22 and a top plate 23 is Reterring to the drawings,` particularly Secured to the head by means of the bolts 24 Figures 1 l O 3, ll) Will be seen that the ma- ;15 shown in Figur 1 The 1312113@ 23 and the chine comprises a main frame 1 in whi a fiaznges 22 are positioned upon opposite sides 4.5 table 2 is slidably mounted. This table is of the guides 25 of the members 19 as most provided with slanting parallel flanges 3 clearly brought out in Figure 3. It is to be which co-operate with the slanting flanges noted from reference to Figure 1 that the en guides i of the main body portion 1 so that slidiig head has an extensive elongated bear When the table ia lewered it will travel down ing with reference to the gui rig portion ot v tomed face.

the machine, and consequently will hold the shank 21 in its correct position although permitting free reciprocatory motion thereo It is to be noted particularly from Figure 1 that the shank 21 is provided with outwardly projecting ears or lugs 26 and has a fiat bot- The shoe proper consists of a metal bar 27 to which is cemented, or otherwise Secured, the curved' rubber shoe 28, This shoe 28 is contoured to fit themolding and is securely cerncnted as stated, or Secured by other means to the metal bar 27. The bar 27 is Secured to the lugs 26 of the shank' by means of bolts 29. The metal bar 28 projects outwardly and is apertured at its ends to receive the clamping bolts 30; such clanping bolts passing through the 'ends of the clamp "strips 3l.

In the actual operation of this device, a sheet ofsand paper 32 is wrapped aboutthe 'shoe 28 and extends upwardly on opposite sides thereof, and also if of sufiicient eXtent, onoppositesides of the shank 21'. It passes beneath the clamping strips 31 and is thus securely held in place. The upper portion of the' sand papesheet 32 may be held by neans V of spring clips ,33 secured to the outcr side I faces of the shank 21.

'Any suitable means may be employed for reciprocating the shoe. For instance, the slide 20 may be connected by means of a pitman 34- with a crank 35, such crank being -"preferably carried by a fly wheel 36, such fly wheel in turn being mounted upon the shaft 37. This fly wheel mayalso be the wheel upon which the' driving belt is carried and through which power is transmitted to the machine; The sh'aft 37 carries a sprocket wheel 38 which is connected by means of a chain 39 with a'sprocket wheel 40; See Figures 1, 2, and 3. The sprocket wheel 40 is rigid with a smaller sprocket wheel 41 which is, connected by; means of a chain 42 with sprocket wheels 43 carried by the sha'lts 14 'of the feed rollers.

Thus when the driving pulley or flywheel 36 is rotated, the shoe is reciprocated' and the mold-ing is fed at a uniform rate through the machine. i

When it is desired to lower the table 2, as for instance, to provide room for changing the support orguide 184 for the molding or r for changing the shoe, it is merely necessary to rotate the hand wheel 10, thus, rotating the cams' 5 and lowering the table in a rearwardly slanting direction. The side fi'anges of the table 2 are slotted 'as indicated in 44 whereby spaces for the cam. shafts 6 are pro- -Vded.- The purpose of the rearwardly slanting direction for the table is to avoid the ne- 'cessity of throwing off the sprocket chain 39 when' 'the table is adjusted. The downward travel of the table would tighten the ehain except for the'fact that the table travels rearshank, however, carries a 'rame 45 which is.

provided with curved slots 40 through which attaching bolts 47 pass. T hese attaching bolts 47 as more clearly shown in Figurc 5 are provided with heads 48 which are cnlarged and which slide within the Slots 49 formcd in the auxiliary shoes 51 which in turn carry sand paper as previously described. The main shoe 28 also carries sand paper and operates in ,a manner identical with that previously described.

It is to be noted particularly that with this form of device two frames 45 are provided, one at each end of the shank 21 and that between these frames auxiliary shanks carrying auxiliary shoes` are adjustably positioned. Thus it is possible with this form of the invention to operate upon molding having a plurality of Channels, protuberances or any other unusual contours.

Further, it will be seen that the machine may be used with a single shoe as first described and when other work comes to the machine, it is merely necessary to attach the frames 45 to the main shank, thus adapting the machine 'to the new work.

It will be seen that a Very simple sanding machine has been provided, and one in which the operation of feeding and sanding the molding is 'wholly automatic and does .not require the supervison of an operator.

Although the invention has been 'described in considerable detail, such description is intended as illustrative rather than limiting as the invention may be variously embodicd and 'as the scope of such invention is to be detcrmined'as claimed.

I claim:

1. A sanding machine comprising a table, means for feeding and guiding a strip of ma- -terial 'across said table, a shank nounted for `rie`d by said shank and having arcuatc slots therein', a'plurality of shoes adapted to carry abrasive material, and bolts passing through said slots" and having' heads, said shoes having Slots extending lengthwise of the shoes 'for receivrg said bolts, Whereby said shoes may be bodly Shifted and guded by said arcuate Slots.

3. A sanding machine comp'sng a table, means for feeding and gudng a, strip of material across said table a shank mounted for recp-ocation across said table, a frzune car 'ed by said shank and having arcuate arms, a, plurality of shoes for carrying ahrasve matral, and bolts adjustably connectng the 10 the County of Mzmtowoc and State of Ws- 15 consn.

CI-IARLES W. DUBEN. 

